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Enabling Technologies

Enabling Technologies. MIS 218A Multimedia for the Web Andy Stokes Week 2. Enabling Technologies. Digital representations Digitization Hardware requirements Software Networks Clients and Servers MIME types Standards. Digital representation. Analog vs Digital a = 97 = 01100001

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Enabling Technologies

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  1. Enabling Technologies MIS 218A Multimedia for the Web Andy Stokes Week 2

  2. Enabling Technologies • Digital representations • Digitization • Hardware requirements • Software • Networks • Clients and Servers • MIME types • Standards

  3. Digital representation • Analog vs Digital • a = 97 = 01100001 • Wristwatches and clocks • Albums and CDs

  4. Bits and Bytes • Bits are data • Bytes are arrangements of that data • Bytes can be arranged and collected into data structures • Computers see the data structures as either programs or data to be acted on by programs

  5. Digitization • Sampling • Quantization

  6. Hardware Requirements • If multimedia is so easy to represent digitally, then why is it so relatively new? • Answer easy to see: • Multimedia takes a lot of speed, processing power to play and create, lots of disk space • Effective presentation also requires bandwidth

  7. Hardware Considerations • Tools for Consumption • Tools for Production

  8. So what is a multimedia PC? • What is the job? Consumption • iMac, Mac OS 8, 333mHz processor, 32mb Ram (minimum), 6 GB hard drive, 24 x CD Drive, v90 modem, 10/100 Ethernet, stereo speakers, graphics accelerator card a multiscan monitor • Equivalent Win98 system

  9. So what is a multimedia PC? • What is the job? Production • High end Mac and NT PCs • G3 Power Mac, 450mHz proc, 1 MB high-speed cache memory, 128-256 mb RAM, built in 128 bit graphics accelerator with 16 mb on-board memory • Equivalent (some would say there is no equivalent) PC • SGI or Sun Workstation

  10. Production Extras • High end scanner • Digital Video Camera • Microphones • Mixers • CD/DVD writers

  11. Software • Depends on type of medium • Picture • Animation • Sound • Approach 1 – WWW • Approach 2 – Quicktime and other viewers • Approach 3 – Stand-alone

  12. Multimedia production and delivery Vector GraphicsIllustrator Freehand Web AuthoringDreamweaver GoLive Web Browser Bitmapped ImagesPhotoshop Paint Shop Pro SoundSound Forge Creative Sound Lab QuickTimeAuthoringElectrifier Pro Premiere QuickTime Viewer PRODUCER AnimationFlash After Effects MGI Lightwave Multimedia AuthoringDirector HyperCard Flash Standalone Movie VideoPremier AfterEffects Final Cut Quick Time Pro

  13. Networks • Connections hold us back • Broadband – needed for streaming • Dialup – wait for it to download

  14. Clients and servers • Content is delivered via http or ftp • Streaming content is often delivered with special protocols – m3u (cousin to mp3)

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